github - ghsa-99pp-v74j-jmgv

GHSA-99PP-V74J-JMGV

Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2025-12-24 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Free special fields when update [lru_,]percpu_hash maps

As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed.

Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value,_long' in 'pcpu_copy_value()'.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-68744"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:29Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Free special fields when update [lru_,]percpu_hash maps\n\nAs [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing\ncalls to \u0027bpf_obj_free_fields()\u0027 in \u0027pcpu_copy_value()\u0027 could cause the\nmemory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the\nmap gets freed.\n\nFix this by calling \u0027bpf_obj_free_fields()\u0027 after\n\u0027copy_map_value[,_long]()\u0027 in \u0027pcpu_copy_value()\u0027.",
  "id": "GHSA-99pp-v74j-jmgv",
  "modified": "2025-12-24T15:30:44Z",
  "published": "2025-12-24T15:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68744"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68744 (GCVE-0-2025-68744)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2025-12-24 12:09

Title

bpf: Free special fields when update [lru_,]percpu_hash maps

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Free special fields when update [lru_,]percpu_hash maps As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed. Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/3bf1378747e251571…
	https://git.kernel.org/stable/c/96a5cb7072cabbac5…
	https://git.kernel.org/stable/c/4a03d69cece145e4f…
	https://git.kernel.org/stable/c/6af6e49a76c9af7d4…

Impacted products

Vendor

Product

Version

Linux

Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 3bf1378747e251571e0de15e7e0a6bf2919044e7 (git)
Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 96a5cb7072cabbac5c66ac9318242c3bdceebb68 (git)
Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 4a03d69cece145e4fb527464be29c3806aa3221e (git)
Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 6af6e49a76c9af7d42eb923703e7648cb2bf401a (git)

Linux

Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.12.63 , ≤ 6.12.* (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/hashtab.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3bf1378747e251571e0de15e7e0a6bf2919044e7",
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "versionType": "git"
            },
            {
              "lessThan": "96a5cb7072cabbac5c66ac9318242c3bdceebb68",
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "versionType": "git"
            },
            {
              "lessThan": "4a03d69cece145e4fb527464be29c3806aa3221e",
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "versionType": "git"
            },
            {
              "lessThan": "6af6e49a76c9af7d42eb923703e7648cb2bf401a",
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/hashtab.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.63",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.13",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.2",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Free special fields when update [lru_,]percpu_hash maps\n\nAs [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing\ncalls to \u0027bpf_obj_free_fields()\u0027 in \u0027pcpu_copy_value()\u0027 could cause the\nmemory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the\nmap gets freed.\n\nFix this by calling \u0027bpf_obj_free_fields()\u0027 after\n\u0027copy_map_value[,_long]()\u0027 in \u0027pcpu_copy_value()\u0027."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T12:09:40.839Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e"
        },
        {
          "url": "https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a"
        }
      ],
      "title": "bpf: Free special fields when update [lru_,]percpu_hash maps",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68744",
    "datePublished": "2025-12-24T12:09:40.839Z",
    "dateReserved": "2025-12-24T10:30:51.031Z",
    "dateUpdated": "2025-12-24T12:09:40.839Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-99PP-V74J-JMGV

CVE-2025-68744 (GCVE-0-2025-68744)

Tags

Sightings

Nomenclature